Achill Island
The largest island off Ireland, reached by bridge, with a cliff-backed beach at Keem and a village of roofless stone houses.
Updated 19 October 2026

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Real photos (1)

Achill is the largest island off the Irish coast and you reach it by bridge, so it feels less like an island than a continuation of Mayo that has run out of shelter. The west end holds Keem Bay, a horseshoe of sand under steep green slopes at the end of a narrow cliff road, and behind it the Croaghaun cliffs drop to the sea from the ridge, reachable only on foot. Slievemore rises over the north coast with the Deserted Village on its lower slope, close to a hundred roofless stone houses left in the nineteenth century. Basking sharks pass Keem in early summer and were once caught here commercially.
History
Archaeological evidence shows Achill was occupied from at least the Neolithic, when the climate was warmer and drier than today, dense woodland covered much of the island and the blanket bogs had not yet formed (Wikipedia, Achill Island).
Highlights
- Keem Bay - the sand beach in a cliff horseshoe at the end of the west road.
- The Croaghaun cliffs - a high sea cliff wall on the western ridge, walk-in only.
- The Deserted Village - roofless stone houses along the slope of Slievemore.
- The Atlantic Drive - the southern coast loop above Achill Sound.
When to go
June to September for swimming at Keem and the best chance of the west end being clear of cloud. Basking sharks are most likely in late spring and early summer. The island empties from October and much of what serves visitors shuts, which some people prefer. Weather changes within an hour here in any month of the year.
Things to know
The road down to Keem is narrow, steep and edged by a drop, and the small car park fills by late morning in July and August. The beach is fine and very cold. The Croaghaun cliffs need a long pathless walk over bog with no barrier at the top. Away from Keem the island is bleak in poor weather and services are thin.
Nearby
Westport is an hour east; Clew Bay and Croagh Patrick sit on the way.
Key facts
Source: Wikidata, item Q631581, read on 18 October 2026.
What to pack for Achill Island
Chosen from what this place is for. Tap a kit for the full checklist.
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
- Water shoes - Protect your feet on rocky entries, hot sand and sea-urchin spines. Find on Amazon
- Dry bag - Keeps phone, cash and keys safe while you are in the water. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.


